@inso_web/els-mcp/dist/observability/logger.js

MCP-сервер поверх INSO Error Logs Service. Read-only tools (search, analytics, fingerprinting, correlations) для подключения Claude Desktop/Code и ChatGPT к логам ошибок. Streamable HTTP transport + stdio для npx-запуска.

import pino from 'pino';
const REDACT_PATHS = [
    'req.headers.authorization',
    'req.headers.cookie',
    'req.headers["x-api-key"]',
    'res.headers["set-cookie"]',
    '*.password',
    '*.token',
    '*.apiKey',
    '*.secret',
    'ctx.elsApiKey',
    'elsApiKey',
];
let _logger = null;
export function createLogger(cfg = {}) {
    const level = cfg.level ?? process.env.MCP_LOG_LEVEL ?? 'info';
    const pretty = cfg.pretty ??
        (process.env.NODE_ENV !== 'production' && process.env.MCP_LOG_PRETTY !== 'false');
    const baseOpts = {
        level,
        base: {
            service: cfg.service ?? 'els-mcp',
            version: cfg.version ?? process.env.GIT_SHA ?? process.env.npm_package_version ?? null,
            pod: cfg.pod ?? process.env.HOSTNAME ?? null,
        },
        redact: {
            paths: REDACT_PATHS,
            censor: '<REDACTED>',
        },
        timestamp: pino.stdTimeFunctions.isoTime,
        formatters: {
            level(label) {
                return { level: label };
            },
        },
    };
    let dest;
    if (pretty) {
        try {
            // pino-pretty подключаем через transport, чтобы не блокировать event-loop
            return pino({
                ...baseOpts,
                transport: {
                    target: 'pino-pretty',
                    options: {
                        destination: 2,
                        colorize: true,
                        translateTime: 'SYS:HH:MM:ss.l',
                        ignore: 'pid,hostname',
                    },
                },
            });
        }
        catch {
            // pino-pretty не установлен — fallback на JSON в stderr
        }
    }
    // Production / fallback: JSON в stderr
    dest = pino.destination({ dest: 2, sync: false });
    return pino(baseOpts, dest);
}
/** Singleton accessor. */
export function getLogger() {
    if (!_logger) {
        _logger = createLogger();
    }
    return _logger;
}
export function setLogger(logger) {
    _logger = logger;
}
export function withRequestContext(logger, fields) {
    return logger.child(fields);
}
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